24hourcampfire.com
24hourcampfire.com
Previous Thread
Next Thread
Print Thread
Hop To
Joined: Jan 2009
Posts: 198
B
Campfire Member
OP Offline
Campfire Member
B
Joined: Jan 2009
Posts: 198
I'm looking for modern high pressure loading data (.30-06 level pressures) for the 9.3x62 with 286 Nosler Partition and Alliant Power Pro 2000-MR.

John B. has published some hot loads using Ramshot Big Game. But I haven't been able to find any of that in more than 2 years.

2000-MR is reportedly a temperature stable ball powder only very slightly faster than Big Game.

If anyone has worked up some good high velocity 9.3x62 286gr loads with 2000-MR or some other powder that can actually be found, I hope they will share the information here.


Brazos Jack

BP-B2

Joined: Dec 2009
Posts: 4,567
S
Campfire Tracker
Offline
Campfire Tracker
S
Joined: Dec 2009
Posts: 4,567
Varget is my friend in my 9.3x62 with 250 accubonds.


Never take life to seriously, after all ,no one gets out of it alive.
Joined: Jan 2005
Posts: 38,724
Campfire 'Bwana
Offline
Campfire 'Bwana
Joined: Jan 2005
Posts: 38,724
There seems to be very little data available for that powder.


Not a real member - just an ordinary guy who appreciates being able to hang around and say something once in awhile.

Happily Trapped In the Past (Thanks, Joe)

Not only a less than minimally educated person, but stupid and out of touch as well.
Joined: Jul 2001
Posts: 59,898
M
Campfire Kahuna
Offline
Campfire Kahuna
M
Joined: Jul 2001
Posts: 59,898
Reloder 15 seems to becoming pretty available lately, along with Norma 203-B, which if it isn't the same powder as 15 is pretty darn close.
Either works great with 286's in the 9.3x62, as well as 250's. Nosler lists 58.5 grains of RL-15 as the highest-velocity load with 286's, and Norma lists 58.0 grains of 203-B as max. Both load are around 2400 fps, and another grain or two gets velocities in the same range as Big Game. RL-15 is also the most temperature-resistant of the older Reloder powders, if that's a factor.

A lot of popular powders are hard to get right now, but some are starting to appear. The repairs to the factory in Belgium where Ramshot rifle powders are made are apparently done, as new TAC is showing up. The people at Western Powders tell me the factory will start making the other Ramshot powders as soon as some of the demand for TAC is filled. I'd guess that Big Game would be the next in line, but don't know.

It seems like Alliant got unlucky about the timing in introducing some of their new powders, and had to scale back to meet high demand for some of their older ones--like a lot of component companies are doing.


“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
Joined: Aug 2009
Posts: 366
Campfire Member
Offline
Campfire Member
Joined: Aug 2009
Posts: 366
If it is any help I have been using 2000MR in a 370 SAKO/9.3x66 which is quite similar to the 9.3x62 but with about 4% greater capacity.

With the 286 Nosler or Lapua 66.5 gn of 2000MR gives 2500fps and excellent accuracy. Of course you should start with a reduced load.


One unerring mark of the love of the truth is not entertaining any proposition with greater assurance than the proofs it is built upon will warrant. John Locke, 1690
IC B2

Joined: Jan 2009
Posts: 198
B
Campfire Member
OP Offline
Campfire Member
B
Joined: Jan 2009
Posts: 198
Hi John,

I have loaded up some trial loads with 250gr NAB's and Varget based on the loads you shared in the article "Medium Mediums".

I do have a pound of R-15 which the charts do show to be slower than Varget. The charts show 2000MR to be slower than R-15 but faster than the Big Game you recommended for top velocities with 286gr bullets.

I wish we had more data at modern pressures like that you shared in the article I mentioned above. Looking at Noslers data, its probably low pressure to be safe in 100 year old Mauser sporters with 9-1/2" twist. I'm shooting a Blaser R-93 with a 1 in 14" twist, so I am confident that more modern pressures would be no problem. Particularly since the same rifle has interchangeable barrels in .338 Win Mag and .375 H&H.


Brazos Jack

Joined: Jul 2001
Posts: 59,898
M
Campfire Kahuna
Offline
Campfire Kahuna
M
Joined: Jul 2001
Posts: 59,898
Yeah, you're fine with adding a little more powder to most published data.

Where have you heard old Mauser 9.3x62's had 9-1/2" twists?


“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.”
John Steinbeck
Joined: Jan 2009
Posts: 198
B
Campfire Member
OP Offline
Campfire Member
B
Joined: Jan 2009
Posts: 198
I got that from an old CZ product data sheet (actually said 1 in 9.2"). But in running it back down just now, I see reference to that being a misprint. I now see that the 1940 RWS Handbook and also current C.I.P. table list the standard twist rate as 360mm or 14.17".

Sorry for the confusion.


Brazos Jack

Joined: Jan 2009
Posts: 198
B
Campfire Member
OP Offline
Campfire Member
B
Joined: Jan 2009
Posts: 198
I know that the relative burn rate ranking of powders depends on many variables. Case to bore capacity ratios, pressure, etc. The first source I checked showed in close order from slow to fast Big Game, 2000-MR, R-15 and then a big jump to Varget. A second reference I just found shows in close order from slow to fast 2000-MR, R-15, Big Game and then a big jump to Varget. So maybe any of these first 3 powders could reach about the same velocity as Johns published Big Game loads with 286gr bullets.

I'll carefully push past the Nosler manual with the R-15 I ave watching very, VERY carefully for any signs of pressure.


Brazos Jack

Joined: May 2008
Posts: 1,437
C
Campfire Regular
Offline
Campfire Regular
C
Joined: May 2008
Posts: 1,437
RL-17 is THE high velocity number for the 286 NP. That's from personal experience.

I've a friend who uses 2000 MR in a short 20" CZ with very good results as well.

RL-17 is a bit slower than 2000 MR and also Big Game. I've been using it for three years without any issues.

Varget may be better for accuracy, I don't know that, but it can't keep pace with RL-17 in Velocity, which fires the 286 NP into MOA.

PM me if you want more info.

Bob

www.bigbores.ca


"What shall it profit a man if he gain the whole world and lose his own soul" - Jesus

IC B3


Moderated by  RickBin 

Link Copied to Clipboard
YB23

Who's Online Now
118 members (338reddog, 10gaugemag, 300_savage, 18 invisible), 1,356 guests, and 694 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums81
Topics1,187,588
Posts18,397,851
Members73,815
Most Online11,491
Jul 7th, 2023


 







Fish & Game Departments | Solunar Tables | Mission Statement | Privacy Policy | Contact Us | DMCA
Hunting | Fishing | Camping | Backpacking | Reloading | Campfire Forums | Gear Shop
Copyright © 2000-2024 24hourcampfire.com, Inc. All Rights Reserved.
Powered by UBB.threads™ PHP Forum Software 7.7.5
(Release build 20201027)
Responsive Width:

PHP: 7.3.33 Page Time: 0.136s Queries: 14 (0.003s) Memory: 0.8344 MB (Peak: 0.9212 MB) Data Comp: Zlib Server Time: 2024-03-28 08:10:31 UTC
Valid HTML 5 and Valid CSS